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11. 发明授权

US06574562B2 Determination of formation anisotropy using multi-frequency processing of induction measurements with transverse induction coils 有权
公开(公告)号：US06574562B2
公开(公告)日：2003-06-03
申请号：US09825104
申请日：2001-04-03
申请人： Leonty A. Tabarovsky , Michael B. Rabinovich
发明人： Leonty A. Tabarovsky , Michael B. Rabinovich
IPC分类号： G01V140
CPC分类号： G01V3/28
摘要： Skin-effect corrections are applied to measurements made by a transverse induction logging tool to give corrected measurements indicative of vertical conductivities of a formation. Data from a conventional induction logging tool are inverted or focused to give an isotropic model of formation resistivity. A forward modeling is used to derive from the isotropic model measurements that would be expected with a transverse induction logging tool. Skin-effect corrections are applied to these expected measurements. The formation anisotropy is determined from the skin-effect corrected transverse induction measurements, the skin-effect corrected expected measurements and from the isotropic model conductivities.

12. 发明授权

US5878372A Method for simultaneous inversion processing of well log data using a plurality of earth models 失效
标题翻译：使用多个地球模型同步反演处理测井数据的方法
公开(公告)号：US5878372A
公开(公告)日：1999-03-02
申请号：US811523
申请日：1997-03-04
申请人： Leonty A. Tabarovsky , Michael B. Rabinovich
发明人： Leonty A. Tabarovsky , Michael B. Rabinovich
IPC分类号： G06F17/12 , G06F19/00
CPC分类号： G06F17/12
摘要： A method of determining a plurality of formation models each of which will simulate the response of a well logging instrument. A measured response of the well logging instrument is used to generate an initial model using inversion processing. A response of the instrument to the initial model is synthesized. A singular value decomposition is performed on the synthetic response to generate eigenparameters of the initial model. Eigenparameters having the least significant overall contribution to the synthetic response are sequentially substituted with linear equations representing prior constraints on the initial earth model. A linear system, including the remaining ones of the eigenparameters and the linear equations is solved so that the eigenparameters are preserved exactly and the linear equations satisfy a least squares fit. An additional synthetic instrument response is generated for each solution to the linear system which falls below a predetermined error threshold. The additional instrument responses are compared with the synthesized response to the initial model. The one of the solutions to the linear system which represents an earth model providing minimum misfit with respect to equations representing the prior constraints is selected as the best fit model.
摘要翻译：一种确定多个地层模型的方法，每个地层模型都将模拟测井仪器的响应。使用测井仪器的测量响应来生成使用反演处理的初始模型。合成仪器对初始模型的响应。对合成响应执行奇异值分解以产生初始模型的特征参数。具有对合成响应的最小有效总体贡献的特征参数被顺序地替换为表示在初始地球模型上的先前约束的线性方程式。解决包括本征参数和线性方程中的其余线性系统的线性系统，使得本征参数被精确地保留，并且线性方程式满足最小二乘拟合。对于低于预定误差阈值的线性系统的每个解决方案产生另外的合成仪器响应。将额外的仪器响应与对初始模型的合成响应进行比较。线性系统的解决方案之一是代表提供关于代表先前约束的方程的最小失配的地球模型，被选为最佳拟合模型。

13. 发明授权

US08965704B2 Apparatus and method for formation resistivity measurements in oil-based mud using a floating reference signal 有权
标题翻译：使用浮动参考信号的油基泥浆中地层电阻率测量的装置和方法
公开(公告)号：US08965704B2
公开(公告)日：2015-02-24
申请号：US13359608
申请日：2012-01-27
申请人： Leonty A. Tabarovsky , Stanislav W. Forgang
发明人： Leonty A. Tabarovsky , Stanislav W. Forgang
IPC分类号： G01V1/40 , G01V3/00 , G01V3/24 , E21B47/10
CPC分类号： G01V3/24 , E21B47/102
摘要： Disclosed is an apparatus for estimating a property of an earth formation penetrated by a borehole containing an oil-based drilling fluid. The apparatus includes an electrode disposed at a carrier and configured to inject alternating current into the formation. An electrically conductive plate is disposed between the first electrode and a borehole wall. An electrical insulator is disposed between and contacts the first electrode and the conductive plate. The apparatus is configured to prevent the drilling fluid from being disposed between the first electrode and the conductive plate. A first sensor is used to measure an electric field established between the first electrode and the conductive plate. A processor is configured to receive a measurement of the electric field to use as a floating reference signal to determine a phase difference with respect to a measured electrical quantity related to the injected electrical current in order to estimate the property.
摘要翻译：公开了一种用于估计由含有油基钻井液的钻孔穿透的地层的性质的装置。该装置包括设置在载体处并被配置为将交流电注入地层中的电极。导电板设置在第一电极和钻孔壁之间。电绝缘体设置在第一电极和导电板之间并与第一电极和导电板接触。该装置被配置为防止钻井液布置在第一电极和导电板之间。第一传感器用于测量在第一电极和导电板之间建立的电场。处理器被配置为接收电场的测量以用作浮动参考信号，以相对于与注入的电流相关的测量的电量来确定相位差，以便估计该性质。

14. 发明授权

US08965702B2 Formation resistivity measurements using multiple controlled modes 有权
标题翻译：使用多个受控模式的地层电阻率测量
公开(公告)号：US08965702B2
公开(公告)日：2015-02-24
申请号：US13359563
申请日：2012-01-27
申请人： Leonty A. Tabarovsky , Stanislav W. Forgang
发明人： Leonty A. Tabarovsky , Stanislav W. Forgang
IPC分类号： G01V1/40 , G01V3/00 , G01V3/26
CPC分类号： G01V3/26
摘要： Disclosed is an apparatus for estimating a property of an earth formation penetrated by a borehole. The apparatus includes a plurality of electrodes disposed downhole and configured to inject an electrical current into the earth formation using an applied voltage and/or measure electrical current resulting from an injection of the electrical current. The apparatus also includes a processor configured to perform a series of formation measurements that include injecting current into the earth formation using a unique subset of electrodes in the plurality of electrodes and measuring current in the earth formation using one or more electrodes not used for the current injecting. The processer sums the measured currents for the electrodes wherein the sum of electrical currents for at least one electrode that measured electrical current is substantially in phase with the applied voltage; and uses the sum of in phase currents to estimate the property.
摘要翻译：公开了一种用于估计钻孔穿透的地层的性质的装置。该装置包括设置在井下的多个电极，并被配置为使用施加的电压将电流注入地层，并且/或测量由电流注入产生的电流。该装置还包括处理器，其被配置为执行一系列地层测量，其包括使用多个电极中的唯一电极子集将电流注入到地层中，并且使用未用于电流的一个或多个电极测量地层中的电流注射。处理器对电极的测量电流求和，其中测量电流的至少一个电极的电流的总和与施加的电压基本上同相; 并使用相电流的和估计属性。

15. 发明申请

US20110261647A1 Resistivity Measurement Through Metal Casing Using Magnetic Field and Magnetoacoustic Phenomena 审中-公开
标题翻译：使用磁场和磁声现象的金属壳体的电阻率测量
公开(公告)号：US20110261647A1
公开(公告)日：2011-10-27
申请号：US13157074
申请日：2011-06-09
申请人： Leonty A. Tabarovsky , Vitaly N. Dorovsky , Yuriy A. Nefedkin , Kholmatzhon Imomnazarov
发明人： Leonty A. Tabarovsky , Vitaly N. Dorovsky , Yuriy A. Nefedkin , Kholmatzhon Imomnazarov
IPC分类号： G01V1/50
CPC分类号： G01V1/44 , G01V3/26
摘要： Measurements of acoustic velocities are made through a case borehole in the absence and presence of an applied magnetic field. A formation resistivity parameter may be estimated from differences in the acoustic velocities.
摘要翻译：在不存在和存在施加的磁场的情况下，通过壳体钻孔测量声速。地层电阻率参数可以根据声速的差异来估计。

16. 发明授权

US07714585B2 Multi-frequency cancellation of dielectric effect 有权
标题翻译：多频消除电介质效应
公开(公告)号：US07714585B2
公开(公告)日：2010-05-11
申请号：US11689118
申请日：2007-03-21
申请人： Marina N. Nikitenko , Leonty A. Tabarovsky
发明人： Marina N. Nikitenko , Leonty A. Tabarovsky
IPC分类号： G01V3/00
CPC分类号： G01V3/24
摘要： Measurements made with an induction logging tool are responsive to formation conductivity and permittivity. The effect of permittivity can be substantially removed by multifrequency focusing.
摘要翻译：用感应测井仪进行的测量对地层电导率和介电常数有反应。通过多频聚焦可以显着地消除介电常数的影响。

17. 发明申请

US20100109672A1 Transient EM for Geosteering and LWD/Wireline Formation Evaluation 有权
标题翻译：用于地质导向和LWD /电缆形成评估的瞬态EM
公开(公告)号：US20100109672A1
公开(公告)日：2010-05-06
申请号：US12263817
申请日：2008-11-03
申请人： Michael B. Rabinovich , Alexandre N. Bespalov , Stanislav W. Forgang , Daniel T. Georgi , Gregory B. Itskovich , Leonty A. Tabarovsky
发明人： Michael B. Rabinovich , Alexandre N. Bespalov , Stanislav W. Forgang , Daniel T. Georgi , Gregory B. Itskovich , Leonty A. Tabarovsky
IPC分类号： G01V3/30
CPC分类号： G01V3/28
摘要： A transmitter on an instrument is used to induce currents in an earth formation when it is turned on or off. A Fourier transform is applied to transient measurements made in the receivers. A multifrequency focusing of the transformed data is used for applications like determination of a distance to an interface in the formation, controlling the drilling direction, determination of formation resistivities and formation strike directions.
摘要翻译：仪器上的变送器用于在接地或关闭时感应地层中的电流。傅立叶变换被应用于在接收机中进行的瞬态测量。变换数据的多频聚焦用于确定到地层中的界面的距离，控制钻井方向，确定地层电阻率和地层撞击方向等应用。

18. 发明申请

US20080231283A1 Multi-Frequency Cancellation of Dielectric Effect 有权
标题翻译：介电效应的多频消除
公开(公告)号：US20080231283A1
公开(公告)日：2008-09-25
申请号：US11689118
申请日：2007-03-21
申请人： Marina N. Nikitenko , Leonty A. Tabarovsky
发明人： Marina N. Nikitenko , Leonty A. Tabarovsky
IPC分类号： G01V3/18
CPC分类号： G01V3/24
摘要： Measurements made with an induction logging tool are responsive to formation conductivity and permittivity. The effect of permittivity can be substantially removed by multifrequency focusing.
摘要翻译：用感应测井仪进行的测量对地层电导率和介电常数有反应。通过多频聚焦可以显着地消除介电常数的影响。

19. 发明申请

US20080068025A1 Method and apparatus for resistivity imaging in boreholes filled with low conductivity fluids 有权
标题翻译：用低电导率流体填充的钻孔中的电阻率成像方法和装置
公开(公告)号：US20080068025A1
公开(公告)日：2008-03-20
申请号：US11521016
申请日：2006-09-14
申请人： Randy Gold , Rashid W. Khokhar , Alexandre N. Bespalov , Leonty A. Tabarovsky
发明人： Randy Gold , Rashid W. Khokhar , Alexandre N. Bespalov , Leonty A. Tabarovsky
IPC分类号： G01V3/00
CPC分类号： G01V3/24
摘要： A mixed mode tool uses an inductive source and detects galvanic currents and/or potentials at electrodes in proximity to a borehole wall to produce a resistivity image of the earth formation.
摘要翻译：混合模式工具使用感应源并检测靠近钻孔壁的电极处的电流和/或电位，以产生地层的电阻率图像。

20. 发明申请

US20080068024A1 Method and Apparatus for Resistivity Imaging in Boreholes Filled with Low Conductivity Fluids 有权
标题翻译：用低电导率液体填充孔洞的电阻率成像方法和装置
公开(公告)号：US20080068024A1
公开(公告)日：2008-03-20
申请号：US11852900
申请日：2007-09-10
申请人： Randy Gold , Rashid W. Khokhar , Alexandre N. Bespalov , Leonty A. Tabarovsky
发明人： Randy Gold , Rashid W. Khokhar , Alexandre N. Bespalov , Leonty A. Tabarovsky
IPC分类号： G01V3/20 , G01V3/02 , G01V3/34
CPC分类号： G01V3/24
摘要： A mixed mode tool uses an inductive source and detects galvanic currents and/or potentials at electrodes in proximity to a borehole wall to produce a resistivity image of the earth formation. Alternative, the magnetic field produced by a galvanic current is detected by an antenna coil and used to produce a resistivity image. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understand that it will not be used to interpret or limit the scope or meaning of the claims.
摘要翻译：混合模式工具使用感应源并检测靠近钻孔壁的电极处的电流和/或电位，以产生地层的电阻率图像。可选地，由电流产生的磁场由天线线圈检测并用于产生电阻率图像。要强调的是，该摘要被提供以符合要求摘要的规则，这将允许搜索者或其他读者快速确定技术公开的主题。提交的理由是，它不会用于解释或限制权利要求的范围或含义。

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